| 摘要 |
<p>A method of determining a transducer setback in an ultrasonic flow meter (10) determines an actual path length (20) of a flowing portion of a fluid in a conduit (12). Next the speed of sound in the fluid is determined (104). The flowing path transit time is calculated using the speed of sound in the fluid (106). A total path transit time is measured (108) and the flowing path transit time is substracted from it to find the setback (110).</p> |
